I am creating a tool that would let customer see the rooms that are booked on a map.

• A customer can associate a room to a room in google workspace.
• When customer wants to associate a room I want to display a dropdown of rooms that are present in google organisation.

What is the correct way to fetch the list of rooms?

Should I be using the admin-sdk, service account or use the members account to retrieve the rooms (as far as I researched the last option is not possible)?

If I use the service account, wouldn’t it mean that the customer (another organisation) should somehow add the my account to their organisation?